#include <iostream>
#include <algorithm>
#include <vector>
#include <string>
#include <iomanip>
#include <cmath>
#include <functional>
using namespace std;
#define diff(x,y) ((x > y) ? (x - y) : (y - x))
#define us(x) (x > 0) ? x : x * -1
#define lli long long int

int main() {
	int n, m, ans = 0;
	cin >> n >> m;
	vector <int> C(n);
	for (int i = 0; i < n; i++)
		cin >> C[i];
	sort(C.begin(), C.end());
	for (int i = 0; i < m; i++) {
		if (C[ans] == 0){
			ans++;
			i--;
			continue;
		}
		C[ans]--;
	}
	if (C[ans] == 0)	ans++;
	cout << ans << endl;
	return 0;
}